UpdateExpression.class.php

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<?php
/* Copyright (C) NAVER <http://www.navercorp.com> */

class UpdateExpression extends Expression
{

    var $argument;

    function __construct($column_name, $argument)
    {
        parent::__construct($column_name);
        $this->argument = $argument;
    }

    function getExpression($with_value = true)
    {
        if($with_value)
        {
            return $this->getExpressionWithValue();
        }
        return $this->getExpressionWithoutValue();
    }

    function getExpressionWithValue()
    {
        $value = $this->argument->getValue();
        $operation = $this->argument->getColumnOperation();
        if(isset($operation))
        {
            return "$this->column_name = $this->column_name $operation $value";
        }
        return "$this->column_name = $value";
    }

    function getExpressionWithoutValue()
    {
        $operation = $this->argument->getColumnOperation();
        if(isset($operation))
        {
            return "$this->column_name = $this->column_name $operation ?";
        }
        return "$this->column_name = ?";
    }

    function getValue()
    {
        // TODO Escape value according to column type instead of variable type
        $value = $this->argument->getValue();
        if(!is_numeric($value))
        {
            return "'" . $value . "'";
        }
        return $value;
    }

    function show()
    {
        if(!$this->argument)
        {
            return false;
        }
        $value = $this->argument->getValue();
        if(!isset($value))
        {
            return false;
        }
        return true;
    }

    function getArgument()
    {
        return $this->argument;
    }

    function getArguments()
    {
        if($this->argument)
        {
            return array($this->argument);
        }
        else
        {
            return array();
        }
    }

}
/* End of file UpdateExpression.class.php */
/* Location: ./classes/db/queryparts/expression/UpdateExpression.class.php */